<template>
	<view v-if="goods_info.goods_name" class="goods-detail-container">
		<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
		  <swiper-item v-for="(item, i) in goods_info.pics" :key="i">
		    <image :src="item.pics_big" @click="preview(i)"></image>
		  </swiper-item>
		</swiper>
		<view class="goods-info-box">
			<view class="price">￥{{goods_info.goods_price}}</view>
			<view class="goods-info-body">
				<view class="goods-name">{{goods_info.goods_name}}</view>
				<view class="favi">
					<uni-icons type="star" size="18" color="gray"></uni-icons>
					<text>收藏</text>
				</view>
			</view>
			<view class="yf">快递：免运费</view>
			
		</view>
		<rich-text :nodes="goods_info.goods_introduce"></rich-text>
			<view class="goods_nav">
				<uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick" />
			</view>
	</view>
</template>

<script>
	import { mapState, mapMutations, mapGetters} from 'vuex'
	export default {
		computed: {
				...mapState('m_cart', []),
				...mapGetters('m_cart', ['total']),
			},
			watch: {
			// 1. 监听 total 值的变化，通过第一个形参得到变化后的新值
			total(newVal) {
				// 2. 通过数组的 find() 方法，找到购物车按钮的配置对象
				const findResult = this.options.find((x) => x.text === '购物车')
				if (findResult) {
					// 3. 动态为购物车按钮的 info 属性赋值
					findResult.info = newVal
				}
			},
			 immediate: true
		},
		data() {
			
			return {
				goods_info: {},
				 options: [{
				      icon: 'shop',
				      text: '店铺'
				    }, {
				      icon: 'cart',
				      text: '购物车',
				      info: 2
				    }],
				    buttonGroup: [{
				        text: '加入购物车',
				        backgroundColor: '#ff0000',
				        color: '#fff'
				      },
				      {
				        text: '立即购买',
				        backgroundColor: '#ffa200',
				        color: '#fff'
				      }
				    ]
			};
		},
		onLoad(options) {
			const goods_id = options.goods_id
			this.getGoodsDetail(goods_id)
		},
		methods:{
			...mapMutations('m_cart', ['addToCart']),
			async getGoodsDetail(goods_id){
				const { 
					data: res 
					} = await uni.$http.get('/api/public/v1/goods/detail?goods_id=395', {goods_id})
				    if (res.meta.status !== 200) return uni.$showMsg()
					res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display:block;" ').replace(/webp/g, 'jpg')
					this.goods_info = res.message
			},
			preview(i) {
			  uni.previewImage({
			    current: i,
			    urls: this.goods_info.pics.map(x => x.pics_big)
			  })
			},
			onClick(e) {
			  if (e.content.text === '购物车') {
			    uni.switchTab({
			      url: '/pages/cart/cart'
			    })
			  }
			},
			buttonClick(e) {
			   if (e.content.text === '加入购物车') {
			      const goods = {
			         goods_id: this.goods_info.goods_id,      
			         goods_name: this.goods_info.goods_name,   
			         goods_price: this.goods_info.goods_price, 
			         goods_count: 1,                         
			         goods_small_logo: this.goods_info.goods_small_logo, 
			         goods_state: true                       
			      }
			      this.addToCart(goods)
			   }
			}
		}
	}
</script>

<style lang="scss">
swiper {
  height: 750rpx;

  image {
    width: 100%;
    height: 100%;
  }
}
.goods-info-box {
		padding: 10px;
		padding-right: 0;

		.price {
			color: #c00000;
			font-size: 18px;
			margin: 10px 0;
		}

		.goods-info-body {
			display: flex;
			justify-content: space-between;

			.goods-name {
				font-size: 13px;
				padding-right: 10px;
			}

			.favi {
				width: 120px;
				font-size: 12px;
				display: flex;
				flex-direction: column;
				justify-content: center;
				align-items: center;
				border-left: 1px solid #efefef;
				color: gray;
			}
		}

		.yf {
			margin: 10px 0;
			font-size: 12px;
			color: gray;
		}
	}
	.goods-detail-container {
		  padding-bottom: 50px;
		}
		
		.goods_nav {
		  position: fixed;
		  bottom: 0;
		  left: 0;
		  width: 100%;
		}
</style>
